Download u40si1 bios. Driver Info: File name: solano888productions.com Driver version: Size: 4 KB Upload source: manufactuter website. Update U40SI BIOS with Hasee BIOS. All these files work fine with my computer. However you are using them at your own risk. * will. This version of the bios for Uniwill / ECS U50SI1 - U40SI1 mb based laptop is set to default FSB +mhz. The default value of original bios.